CN213367023U

CN213367023U - Heat dissipation block for pump light source

Info

Publication number: CN213367023U
Application number: CN202022324110.7U
Authority: CN
Inventors: 陈佳林; 丁亚茜; 邢美术; 戚伟
Original assignee: Shanghai Institute Of Transmission Line (cetc No23 Institute)
Current assignee: Shanghai Institute Of Transmission Line (cetc No23 Institute); CETC 23 Research Institute
Priority date: 2020-10-19
Filing date: 2020-10-19
Publication date: 2021-06-04
Anticipated expiration: 2030-10-19

Abstract

The utility model relates to a pumping light source radiating block, its characterized in that: the heat dissipation structure comprises a base plate and heat dissipation fins, wherein each heat dissipation fin is a cylinder or a sheet, a plurality of heat dissipation fins are vertically arranged with the base plate in a matrix manner, and gaps are reserved among the heat dissipation fins. The utility model has the advantages that the middle part of the radiating block is finned, and the middle of the radiating fin is provided with the through hole, so that the heat exchange area between the radiating block and the external heat contact is increased, and the heat conductivity is increased; the transverse and longitudinal materials of the bottom surface material of the radiating block are removed, so that transverse and longitudinal air channels are formed on the bottom surface of the radiating block, the convection mode of the bottom surface of the radiating block is changed from laminar flow to turbulent flow, and the radiating coefficient is increased.

Description

Heat dissipation block for pump light source

Technical Field

The utility model relates to an optical instrument field specifically is a pumping light source radiating block.

Background

The light source system generally uses one or more pump light sources as a seed source, and the pump light sources are combined into a beam with specific power by a beam combiner. In order to meet the requirement of miniaturization, the volume of the pumping light source should be as small as possible while meeting the power condition. Generally, the smaller the volume, the higher the heat concentration, and the greater the difficulty of heat dissipation. The excessive temperature of the pumping light source may cause unstable quality of the output light of the pumping light source, and may even cause pump burnout.

The heat dissipation performance of the existing pump light source heat dissipation block cannot meet the heat dissipation requirement. The existing radiating block is solid inside, and the radiating mode with the outside is heat conduction radiating, so that heat exchange radiating with air is not carried out or is rarely carried out. In addition, most of the air convection modes of the existing heat dissipation block are laminar flows, and the heat dissipation effect cannot achieve an ideal effect. Therefore, a pump light source heat dissipation block capable of effectively improving heat dissipation efficiency is needed.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the pumping light source radiating block or the oversize or the high or uneven problem of heat dissipation of coefficient of heat dissipation among the prior art, provided a pumping light source radiating block, its concrete structure is:

the utility model provides a pump light source radiating block which characterized in that: substrate 1, radiating fin 2 have been included, radiating fin 2 is cylinder or lamellar body, several radiating fin 2 perpendicular to substrate 1 is arranged into the matrix, every leave the clearance between radiating fin 2.

Further, the heat conduction base plate 3 is further included, the heat conduction base plate 3 is parallel to the substrate 1, and the plurality of heat dissipation fins 2 are located between the heat conduction base plate 3 and the substrate 1.

Further, the heat dissipation fins 2 are transversely and longitudinally provided with a plurality of vent holes 21, and the vent holes 21 are through holes.

Further, the size of each heat dissipation fin 2 is consistent, and the distance between the heat dissipation fins 2 is the same.

Further, the height of the radiating fins 2 is between 5mm and 10mm, the length and the width are between 1.5mm and 3mm, the distance is between 2mm and 3mm, and the size of the through holes is between 1mm and 2 mm.

Further, the cross section of the radiating fin (2) is square.

Further, the ratio of the distance between the radiating fins (2) to the side length of the cross section of the radiating fin (2) is 1: 1.

The beneficial effects of the utility model reside in that:

1. the middle part of the radiating block is finned, and the middle of the radiating fin is provided with the through hole, so that the heat contact exchange area between the radiating block and the outside is increased, and the heat conductivity is increased;

2. the transverse and longitudinal materials of the bottom surface material of the radiating block are removed, so that transverse and longitudinal air channels are formed on the bottom surface of the radiating block, the convection mode of the bottom surface of the radiating block is changed from laminar flow to turbulent flow, and the radiating coefficient is increased.

Drawings

FIG. 1 is a perspective view of a pump light source heat sink with an additional heat conducting bottom plate;

FIG. 2 is a cross-sectional view of a pump light source heat sink with an additional heat conducting base plate;

FIG. 3 is a perspective view of a heat sink of a pump light source without a heat conductive base plate;

FIG. 4 is a cross-sectional view of a pump light source heat sink without a heat conductive base plate;

description of reference numerals:

1. a substrate; 2. a heat dissipating fin; 3. a thermally conductive base plate; 21. a vent hole.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

The utility model provides a pump light source radiating block, its structure is shown in figure 3, including base plate 1, radiating fin 2. The substrate is a metal plate for mounting an optical device. The heat dissipation fins 2 may be in a sheet shape or a column shape, and a plurality of heat dissipation fins 2 are perpendicular to the substrate 1 and distributed on the surface of the substrate 1. As shown in fig. 4, which is a transverse cross-sectional view of the heat dissipation block, the base plate 1 and the heat dissipation fins 2 are an integral component. The end part of the radiating fin 2 is provided with a threaded hole for installation and fixation in equipment.

Further, as shown in fig. 1 and 2, a heat conducting bottom plate 3 is additionally arranged below the heat radiating fins 2, and the heat conducting bottom plate is used for contacting the ground to transfer heat. The heat conduction bottom plate 3 is parallel to the base plate 1, the plurality of radiating fins 2 are arranged between the heat conduction bottom plate 3 and the base plate 1, and the radiating fins 2 are perpendicular to the base plate 1. According to actual requirements, holes for mounting the pump light source can be drilled in the substrate 1, and fixing holes can also be formed in the heat conduction bottom plate 3 and are mounted and fixed in the equipment. The base plate 1, the heat radiating fins 2 and the heat conducting base plate 3 are an integral part.

Further, in order to increase the heat exchange area, the heat dissipation fin 2 is perforated with a plurality of vent holes 21 in the transverse and longitudinal directions, and the vent holes 21 are through holes (as shown in fig. 2). The sizes of the radiating fins 2 are consistent, and the distances between the radiating fins 2 are consistent. Through repeated tests, the heat dissipation effect is optimal when the ratio of the space between the heat dissipation fins 2 to the size of the heat dissipation fins 2 is 1: 1. Tests show that the height range of the radiating fins 2 can be selected to be 5mm-10 mm; the length and width range of the radiating fins 2 can be selected to be 1.5mm-3 mm; the optional range of the distance between the radiating fins 2 is 2mm-3 mm.

In order to ensure the heat dissipation performance, various materials with high heat conductivity coefficients, such as gold, silver, copper, aluminum and the like, should be selected as the material, and in consideration of the cost, the material adopted by the whole pump heat dissipation block is preferably aluminum alloy or copper alloy.

To further illustrate the present invention, the present invention provides the following embodiments.

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Examples 1,

The whole size of radiating block of this embodiment is 11mm 34mm 18mm, and radiating fin 2 is square post, and cross sectional dimension is 2mm, and the interval 2mm between every radiating fin 2, radiating fin 2's height is 7mm, and the thickness of base plate 1 is 3mm, and 3 thickness of heat conduction bottom plate are 1mm, and ventilation hole 21 diameter is 1 mm. The material is 6061 aluminum alloy.

Examples 2,

The overall size of the radiating block of this embodiment is 10mm 34mm 18mm, and radiating fin 2 is square column, and cross sectional dimension is 2mm, and the interval between every radiating fin 2 is 2mm, and radiating fin 2's height is 7mm, and the thickness of base plate 1 is 3mm, and ventilation hole 21 diameter is 1 mm. The material is 6061 aluminum alloy.

Examples 3,

The whole size of radiating block of this embodiment is 14mm 50mm 26mm, and radiating fin 2 is square post, and cross sectional dimension is 3mm, and the interval between every radiating fin 2 is 3mm, and radiating fin 2's height is 10mm, and the thickness of base plate 1 is 3mm, and 3 thickness of heat conduction bottom plate are 1mm, and ventilation hole 21 diameter is 2 mm. The material is copper alloy.

Examples 4,

The whole size of radiating block of this embodiment is 9mm 34mm 18mm, and radiating fin 2 is square post, and cross sectional dimension is 1.5mm 2mm, and the interval between every radiating fin 2 is 2mm, and radiating fin 2's height is 7mm, and the thickness of base plate 1 is 3mm, and 3 thickness of heat conduction bottom plate are 1mm, and ventilation hole 21 diameter is 1 mm. The material is 6061 aluminum alloy.

A pumping light source radiating block, it is through special structural design, can effectually take away pumping light source during operation, the heat that produces among the photoelectric conversion process, some heat carries out the heat transfer through radiating fin 2 and equipment and takes away, the air convection that some heat formed in through ventilation hole 21 is taken away. Compared with the traditional heat dissipation structure, the temperature of the pump source can be reduced by 5.2 ℃ at most through experiments, and the heat dissipation efficiency is improved by 16.4%.

The present invention is not limited to the above embodiments, and those skilled in the art can implement the present invention in various other embodiments according to the disclosure of the present invention, and the protection scope of the present invention is defined by the following claims.

Claims

1. The utility model provides a pump light source radiating block which characterized in that: including base plate (1), radiating fin (2) are square column body or lamellar body, several radiating fin (2) perpendicular to base plate (1) and become the matrix and arrange.

2. The pump light source heat sink of claim 1, wherein: the heat-conducting base plate is characterized by further comprising a heat-conducting base plate (3), wherein the heat-conducting base plate (3) is parallel to the base plate (1), and the plurality of heat-radiating fins (2) are located between the heat-conducting base plate (3) and the base plate (1).

3. The pump light source heat sink of claim 2, wherein: radiating fin (2) transversely and vertically are equipped with several ventilation hole (21), ventilation hole (21) are the through-hole.

4. The pump light source heat sink of claim 3, wherein: the size of each radiating fin (2) is consistent, and the distance between every two adjacent radiating fins (2) is the same.

5. The pump light source heat sink of claim 4, wherein: the height of the radiating fins (2) is between 5mm and 10mm, the side length is between 1.5mm and 3mm, the distance is between 2mm and 3mm, and the size of the through holes is between 1mm and 2 mm.

6. The pump light source heat sink of claim 1, wherein: the cross section of the radiating fin (2) is square.

7. The pump light source heat sink of claim 6, wherein: the ratio of the distance between the radiating fins (2) to the side length of the cross section of the radiating fin (2) is 1: 1.